lodash/internal/createFind.js

define(['./baseCallback', './baseFind', './baseFindIndex', '../lang/isArray'], function(baseCallback, baseFind, baseFindIndex, isArray) {

  /** Used as a safe reference for `undefined` in pre-ES5 environments. */
  var undefined;

  /**
   * Creates a `_.find` or `_.findLast` function.
   *
   * @private
   * @param {Function} eachFunc The function to iterate over a collection.
   * @param {boolean} [fromRight] Specify iterating from right to left.
   * @returns {Function} Returns the new find function.
   */
  function createFind(eachFunc, fromRight) {
    return function(collection, predicate, thisArg) {
      predicate = baseCallback(predicate, thisArg, 3);
      if (isArray(collection)) {
        var index = baseFindIndex(collection, predicate, fromRight);
        return index > -1 ? collection[index] : undefined;
      }
      return baseFind(collection, predicate, eachFunc);
    };
  }

  return createFind;
});